File(s) not publicly available

Effects of foot orthosis on ground reaction forces and perception during short sprints in flat-footed athletes

journal contribution
posted on 20.04.2021, 04:09 by Jun W Ng, Lowell JY Chong, Jing W Pan, Wing-Kai Lam, Malia Ho, Pui W Kong
Prefabricated foot orthosis (FO) is commonly worn for flat foot management. This study aimed to investigate the kinetic and perceptual effects of wearing prefabricated FO among flat-footed athletes during bouts of sprints. Twenty male sprint-based sports athletes who had flat foot bilaterally ran at three test speeds (5, 6, 7 m/s) under two conditions: prefabricated FO and sham FO. Ground reaction force (GRF) variables and subjective perceptions were recorded. Kinetic variability of GRF variables were computed to indicate step-to-step variance. Biomechanically, wearing prefabricated FOs increased vertical impact force (p =.005), loading rate (p =.001), and kinetic variability of peak propulsive force (p =.038) and loading rate (p =.019) during sprinting speeds across 5 to 7 m/s. Subjectively, prefabricated FO provided better arch support (p =.001) but resulted in reduced forefoot cushioning (p =.001), heel cushioning (p =.002), and overall comfort (p =.008).

History

Volume

29

Issue

1

Start Page

43

End Page

55

Number of Pages

13

eISSN

1543-8635

ISSN

1543-8627

Publisher

Informa UK Limited

Language

en

Peer Reviewed

Yes

Open Access

No

Acceptance Date

09/04/2020

External Author Affiliations

Nanyang Technological University, Singapore; Shenyang Sport University, China

Era Eligible

Yes

Journal

Research in Sports Medicine

Exports

CQUniversity

Exports